Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 2

air spring Related Abstracts

2 Improving Ride Comfort of a Bus Using Fuzzy Logic Controlled Suspension

Authors: Nurkan Yagiz, Mujde Turkkan

Abstract:

In this study an active controller is presented for vibration suppression of a full-bus model. The bus is modelled having seven degrees of freedom. Using the achieved model via Lagrange Equations the system equations of motion are derived. The suspensions of the bus model include air springs with two auxiliary chambers are used. Fuzzy logic controller is used to improve the ride comfort. The numerical results, verifies that the presented fuzzy logic controller improves the ride comfort.

Keywords: Fuzzy Logic Controller, ride comfort, air spring, bus

Procedia PDF Downloads 248
1 Characteristics and Durability Evaluation of Air Spring

Authors: Chang Su Woo, Hyun Sung Park

Abstract:

Air spring system is widely accepted for railway vehicle secondary suspension to reduce and absorb the vibration and noise. The low natural frequency ensures a comfortable ride and an invariably good stiffness. In this paper, the characteristic and durability test was conducted in laboratory by using servo-hydraulic fatigue testing system to reliability evaluation of air spring for electric railway vehicle. The experimental results show that the characteristics and durability of domestically developed products are excellent. Moreover, to guarantee the adaption of air spring, the ride comfort and air pressure variation were measured in train test on subway line. Air spring developed by this study for railway vehicles can guarantee the reliability of average usage of 1 million times at 90% confidence level.

Keywords: Reliability, railway, air spring, service lifetime

Procedia PDF Downloads 318